Nut-lock.



0. DR'EGER.

NUT LOCK'. APPLICATION FILED-AUG. 22, 1911.

1,037,739; Pamentea sept. 3,1912.

l'wue/wlfoz 086117201169671 MMM 32,1,

As a further' object my 'provide a nut locking device, simple in its,tions of the parts that I OSCAR DREGER, F HUN TSVILLE, ALABAMA.

N UIT-LOCK.

Specication of Letters Patent.

led August 22, 1911.

Application To all 'whom it may concern:

Be it known that I, GSCAR DREGER, citizen of the United States,residing, at Huntsville, in the county of Madison and State of Alabama,have invented certain new and useful Improvements in Nut-Locks, of whichthe following is a specification.

y invention comprehends certain new d useful improvements in nut locks,and

the nut 1n its engaged pcsition.- A

invention alms 4 to and therefore capable of being easily and cheaplymanufactured.

' objects in View as proceeds my invention consists in certainconstructions, arrangements and combinashall hereinafter fully describeand claim.

For a full understanding of the invention reference is to be had to thefollowing de.- scription and accompanying drawing, in which:

Figure l shows my device in operation in the preferred embodimentthereof; and also shows a partial sectional view; Fig. 2 is aperspective view of the nut withthe lookingwasher removed; Fig. 3 showsan elevation of the device in operation.

cated in all the views of the accompanying drawing by the same referencecharacters.

1 said shoulder. Theface of said washer ed nut 7 engages the threadedfree to move longitudinally 1 Patented Serial No. 645,336.

adjoining-the portion I ace 6., is steep pitch. An internally tapered,threadortion 2'. of outer face being at, and the ratchetiteeth for ofthe washer e purposefof this description, a bolt 'h my nut lockingdevice is mounted, is'shown passingthrough work 11.

From the foregoingv descri tion in connection with the operation of myimproved device will loe` apparent. The nut lockingdevice bethe nut,the.;- inner face 8 3 with the teeth facing outwardly, and .screwing 'Pthe tapered portion 2 of'the main nut, t-he teeth arranged forengagement with the teeth of washer 5, the-device is screwed upon thebolt 10 until the work 11. The nut-f7 is then screwed down on thetapered portion 2 of the nut which by virtue of th forced to seize thebolt l0, thereby locking the two together. In order tomaintain thislocked position the washer 5 is shoved into engagement with the toothednut l7 which is sl'ghtly unscrewed to ment possible.

will-'not occur except" through outside means.v e engagement of thetoothedV washer with the toothed nut 7 prohibits the main .nut fromloosening and as it would never of itselfttighten, it is apparent thatthe locking of the device'is complete.

aving thus described theinvention what is `claimed as new is:

l. A nut lock embodyinga main nut having a clamping port-ion adapted toengage a bolt, a secondary nut threaded on said p ortion and providedwith teeth on its inner face, and a non-rotatable'washer slidablymounted between thel nuts and provided ept. 3, 1912.

is fiat. The other i provided with ratchet Vteeth ofloowith teethadapted to engage the teeth of the secondary nut and prevent independentrot-ation of the nuts.

2. A nut lock embodying a main nut provided wit-h a tapered exteriorlythreaded split extension adapted to engage a bolt, a secondary nuthaving undercut teeth on its inner face and mounted on the extension ofthe main nut, and -a non-rotatable'- Washer llo I Copies of this patentmay be obtained for slidably mounted upon the main nut adthe independentrotation of the Washer jacent to the secondary nut and provided thereon.

with undercut teeth adapted to engage the teeth of the latter.

3. A nutlock embodying a main nut hav-` ing a tapered and threadedlongitudinally split extension, an internally tapered secondary nutadapted to screw on the extension, and a Washer interposed between thetivo nutsand provided With means co-aoting with themain nut to preventrotation thereof, said washer and the secondary nut being provided withinterengaging undercut teeth on their adjacent faces.

4. A nut lock embodying a main nut having a portion adapted to clampabout a bolt, a secondary nut threaded on said portion and provided withundercut teeth, a Washer slidably mounted between the nuts and providedwith undercut teeth adapted to engage the teeth of the secondary nut,and

means provided on the main nut to prevent 5. A nut locking deviceembodying a nut a member for Wrench engage.

comprising I ment, an angular shoulder abutting against said member, anda tapered externally threaded extension from said shoulder provided Withlongitudinal slots, a dWasher provided with ratchet teeth on one sidethereof, formed With an opening corresponding in shape to theaforementioned shoulder .and designed to fit thereon, being capable oflongitudinal movem nt, and a second nut mounted upon the threaded taperof the first nut and provided with ratchet teeth for engagement With theteeth of the Washer. In testimony whereof, I affix my signature inpresence of two Witnesses.

OSCAR DREGER. [L 5.] Witnesses:

H. C. LAUGHLIN, F. J'. MATTHEWS.

ive cents each, by addressing the Gommissoner of yatents,

Washington, D. C.

